CN218160143U - GIS three-position isolating switch - Google Patents

Abstract

The utility model provides a GIS three-station isolating switch, including switch housing, combined floodgate static contact, separating brake static contact, ground connection static contact, moving contact, spliced pole, insulator foot, slewing mechanism and driving motor. The utility model discloses a through the driving motor drive slewing mechanism, thereby make the moving contact contacts the static contact that corresponds according to operating command. The rotating mechanism adopts a mode that a gear A and a gear B are rotationally clamped, particularly, the outer end of the gear A is provided with equally spaced gear grooves A, every eighth of the interval of the outer end of the gear B is provided with equally spaced gear grooves B, and the rest parts are smooth insulating surfaces; the gear A is ensured to be conductive only when contacting the gear groove B, the power utilization safety in the process of operating the switch is ensured, and the arc discharge phenomenon is reduced.

Description

GIS three-position isolating switch

Technical Field

The utility model relates to a GIS equipment field especially relates to a three station isolator of GIS.

Background

The three-position isolating switch is an electrical appliance which is most used in high-voltage switching electrical appliances, plays an isolating role in a circuit as the name suggests, and is commonly used in a totally-enclosed combined electrical appliance (GIS) or a composite electrical appliance (PASS).

The three working positions refer to three working positions: the disconnecting switch comprises a switching-on position where a main fracture of the disconnecting switch is switched on, an isolating position where the main fracture is separated and a grounding position of a grounding side. The three-station isolating switch is actually integrated with the functions of the isolating switch and the grounding switch and is completed by one knife, so that mechanical locking can be realized, the grounding knife of a main loop can be prevented from being closed, the one knife can only be in one position, the three-station isolating switch is different from the traditional isolating switch, the main knife is the main knife, the grounding knife is the grounding knife, and misoperation can occur between the two knives. The three-position isolating switch uses a knife, and the working position of the knife is unique at a certain moment, not at the switching-on position of the main brake, but at the isolating position or the grounding position.

The GIS equipment commonly adopts single-break isolator at present, but, this type single-break isolator has following problem: in the process of operating the isolating switch, one side of the isolating switch is always electrified, so that the electric shock risk in the operating process of an operator is increased, and the damage of electrified operating equipment and even accidents can be caused. In addition, the arc discharge phenomenon is also influenced to a certain extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the three station isolator of GIS that provide.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a GIS three-position disconnector comprising: switch housing, combined floodgate static contact, separating brake static contact, ground connection static contact, moving contact, spliced pole, insulating base, slewing mechanism and driving motor.

Wherein, set up two pairs of mutually perpendicular's interface on the switch casing, include: left interface, right interface, last interface and lower interface. The left interface and the right interface are positioned at a horizontal position, and the upper interface and the lower interface are positioned at a vertical position; the switching-on static contact is located at the left interface, the grounding static contact is located at the right interface, the switching-off static contact is located at the upper interface, and the connecting column is fixedly arranged at the lower interface. The insulating base is arranged at the bottom of the switch shell, and the driving motor is arranged on the insulating base.

Wherein, slewing mechanism arranges in inside the switch casing, slewing mechanism includes gear A, gear B, the insulating bracing piece of L type, insulating dwang, conducting rod. The gear B and the gear A are both longitudinally arranged, and the gear A is positioned right above the gear B; the right side of the axle center of the gear A is connected with the L-shaped insulating support rod, and the other end of the L-shaped insulating support rod is fixed on the insulating base; the left side of the axle center of the gear A is provided with the conducting rod, and the moving contact is fixed on the surface of the gear A through the conducting rod.

The gear A and the gear B are rotationally clamped, the outer end of the gear A is provided with equally spaced gear grooves A, every eighth of the interval of the outer end of the gear B is provided with equally spaced gear grooves B, and the rest parts are smooth insulating surfaces; the gear B is arranged, so that the gear A is guaranteed to be conductive only by contacting the gear groove B, and the power utilization safety in the process of operating the switch is guaranteed. The gear groove A and the gear groove B are matched in size and distance, and complete meshing of the gear groove A and the gear groove B is guaranteed; the circumference of the gear groove B is equal to one fourth of the circumference of the gear groove A, so that when the gear B rotates one gear groove B and the smooth insulating surface, the gear A rotates one fourth, and the moving contact can be correctly connected to the corresponding static contact through every rotation.

When the moving contact contacts with the opening static contact, the lowest end of the gear groove A is meshed with the midpoint of the gear groove B, so that the gear A rotates for one eighth of a circle under the constant speed driving of the gear B, then stays for twice of time, and rotates for one eighth of a circle, and the arc discharge phenomenon caused by the operation relation in the use process of the isolating switch is reduced.

Wherein, gear B axle center left end with the spliced pole is connected, gear B axle center right-hand member with insulating dwang is connected, gear B passes through insulating dwang with driving motor's output pivot is connected, gear B's axle center with the axle center of insulating dwang the axle center of output pivot is on same straight line, guarantees pivoted stability.

The utility model discloses a through the driving motor drive slewing mechanism, thereby make the moving contact contacts the static contact that corresponds according to operating command. The rotating mechanism adopts a mode that a gear A and a gear B are rotationally clamped, particularly, the outer end of the gear A is provided with equally spaced gear grooves A, every eighth of the interval of the outer end of the gear B is provided with equally spaced gear grooves B, and the rest parts are smooth insulating surfaces; the gear A is guaranteed to be only contacted with the gear groove B, so that the electric safety in the process of operating the switch is guaranteed, and the arc discharge phenomenon is reduced.

Preferably, the connecting column, the conducting rod, the gear A and the gear B are all made of beryllium copper alloy, so that the isolating switch is high in hardness, high in conductivity and high in wear resistance, and the service performance of the isolating switch is improved.

Preferably, the contact end of the moving contact is of an arc-shaped structure, so that the smoothness of the moving contact and the static contact in each contact is ensured.

Preferably, eight holes with the same size are arranged on the gear B at equal intervals, so that the weight of the gear is reduced, and the whole equipment is light.

Preferably, the switching-on static contact, the switching-off static contact, the grounding static contact and the moving contact are all provided with copper-tungsten alloy sheets, so that the arc discharge points of the moving contact and the static contact are prevented from being melted, the switching action can be safely carried out at the arcing temperature, and the reliability of the isolating switch is improved.

Preferably, the surface of the switch shell is provided with a zinc coating, so that the surface of the isolating switch is prevented from being corroded, and the service life is prolonged.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a slewing mechanism adopts the mode that gear A and gear B rotated the joint, and especially, gear A outer end is equipped with equidistant gear groove A entirely, and every interval eighth in gear B outer end is equipped with equidistant gear groove B, and all the other parts are smooth insulating surface. Gear B has guaranteed that gear A only contacts gear groove B can electrically conduct, has guaranteed the power consumption safety of operating switch in-process. In addition, the length of the gear groove B is equal to one fourth of the length of the gear groove A, so that when the gear B rotates to finish one gear groove B and one smooth insulating surface, the gear A rotates by one fourth, and the movable contact can be correctly connected to the corresponding static contact by each rotation; in addition, the moving contact and all the static contacts are provided with copper-tungsten alloy sheets, so that the generation of arc discharge is reduced.

Drawings

Fig. 1 is a schematic front structural view of embodiment 1 of the present invention;

fig. 2 is a schematic side view of embodiment 1 of the present invention;

fig. 3 is a schematic view of a gear structure of embodiment 1 of the present invention;

fig. 4 is a front view of the closing state of embodiment 1 of the present invention;

description of reference numerals: 1. a switch housing; 2. closing a static contact; 3. separating a brake static contact; 4. a grounding static contact; 5. connecting columns; 6. a gear A; 601. a gear groove A; 7. a gear B; 701. a gear groove B; 702. smoothing an insulating surface; 703. a hole; 8. a moving contact; 9. an insulating base; 10. a drive motor; 11. an L-shaped insulating support rod; 12. insulating rotating rod 13, conducting rod.

Detailed Description

In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1:

as shown in fig. 1-2, a GIS three-position disconnecting switch includes a switch housing 1, a closing static contact 2, an opening static contact 3, a grounding static contact 4, a moving contact 8, a connecting column 5, an insulating base 9, a rotating mechanism, and a driving motor 10.

Two pairs of interfaces which are perpendicular to each other are arranged on the switch shell 1 and comprise a left interface, a right interface, an upper interface and a lower interface. The left connector and the right connector are located at horizontal positions, and the upper connector and the lower connector are located at vertical positions; the switching-on static contact 2 is positioned at the left connector, the grounding static contact 4 is positioned at the right connector, the switching-off static contact 3 is positioned at the upper connector, and the connecting column 5 is fixedly arranged at the lower connector. The insulating base 9 is arranged at the bottom of the switch shell 1, and the driving motor 10 is arranged on the insulating base 9.

The rotating mechanism is arranged inside the switch shell 1 and comprises a gear A6, a gear B7, an L-shaped insulating support rod 11, an insulating rotating rod 12 and a conducting rod 13. The gear B7 and the gear A6 are both longitudinally arranged, and the gear A6 is positioned right above the gear B7; the right side of the axle center of the gear A6 is connected with an L-shaped insulating support rod 11, and the other end of the L-shaped insulating support rod 11 is fixed on an insulating base 9; the left side of the axle center of the gear A6 is provided with a conducting rod 13, and the moving contact 8 is fixed on the surface of the gear A6 through the conducting rod 13.

As shown in fig. 3, the gear A6 and the gear B7 are rotationally clamped, the outer end of the gear A6 is provided with an equally spaced gear groove a601, every eighth of the outer end of the gear B7 is provided with an equally spaced gear groove B701, and the rest is a smooth insulating surface 702; the gear B7 is arranged, so that the gear A6 can only be in electric conduction when contacting the gear groove B701, and the electric safety in the process of operating the switch is ensured. The gear groove A601 and the gear groove B701 have the same size and interval, and complete meshing of the gear groove A601 and the gear groove B701 is guaranteed; the circumference of the gear groove B701 is equal to one fourth of the circumference of the gear groove A601, so that when the gear B7 rotates to finish one gear groove B701 and the smooth insulating surface 702, the gear A6 rotates by one fourth, and the movable contact 8 can be correctly connected to the corresponding stationary contact through each rotation.

When the moving contact 8 contacts with the opening static contact 3, the lowest end of the gear groove a601 is meshed with the midpoint of the gear groove B701, so that the gear A6 rotates for one eighth of a circle under the uniform driving of the gear B7, then stays for twice of time, and then rotates for one eighth of a circle, thereby reducing the arc discharge phenomenon caused by the operation relationship in the use process of the isolating switch.

The left end of the axis of the gear B7 is connected with the connecting column 5, the right end of the axis of the gear B7 is connected with the insulating rotating rod 12, the gear B7 is connected with the output rotating shaft of the driving motor 10 through the insulating rotating rod 12, and the axis of the gear B7, the axis of the insulating rotating rod 12 and the axis of the output rotating shaft are on the same straight line, so that the rotating stability is ensured.

Preferably, the connecting column 5, the conducting rod 13, the gear A6 and the gear B7 are all made of beryllium copper alloy, so that the isolating switch is high in hardness, conductivity and wear resistance, and the service performance of the isolating switch is improved.

Preferably, the contact end of the moving contact 8 is an arc-shaped structure, so that the smoothness of the moving contact 8 and the fixed contact in each contact is ensured.

Preferably, eight holes 703 with the same size are arranged on the gear B7 at equal intervals, so that the weight of the gear is reduced, and the whole equipment is light.

Preferably, the switching-on static contact 2, the switching-off static contact 3, the grounding static contact 4 and the moving contact 8 are all provided with copper-tungsten alloy sheets, so that the arc discharge points of the moving contact 8 and the static contacts are prevented from being melted, the switching action can be safely carried out at the arcing temperature, and the reliability of the isolating switch is improved.

Preferably, switch housing 1 surface is equipped with the galvanizing coat, prevents isolator surface corrosion, increase of service life.

When the device is used specifically, the outer end of the connecting column 5 is electrically connected with the main device, the outer side of the closing static contact 2 is electrically connected with the loop device, the outer side of the grounding static contact 4 is grounded, the outer side of the opening static contact 3 is in idle connection, the connecting column 5, the gear A6, the gear B7, the conductive rod 13 and the moving contact 8 are all conductive, and the moving contact 8 can be respectively contacted with the closing static contact 2, the opening static contact 3 and the grounding static contact 4 under the action of the driving motor 10 and the rotating mechanism according to operation instructions.

As shown in fig. 4, when the moving contact 8 touches the closing stationary contact 2, the disconnecting switch is in a closing state; at this time, the lowermost end of the gear groove a601 of the gear A6 is meshed with the midpoint of the gear groove B701 at the upper end of the gear B7, and the entire GIS device is in a power-on state. When the driving motor 10 starts to work, after the gear B7 rotates ninety degrees clockwise through the insulating rotating rod 12, as shown in fig. 1, the moving contact 8 touches the opening static contact 3, the isolating switch is in an opening state, and the whole GIS device is powered on and off. In the process, the range that the gear A6 passes at the outer end of the gear B7 includes one half of the gear groove B701, one smooth insulating surface 702, and one half of the next gear groove B701. Since the gear A6 is driven only when the gear groove a601 and the gear groove B701 mesh, the gear A6 idles when the gear groove a601 contacts the smooth insulating surface 702; therefore, the gear A6 rotates clockwise for ninety degrees, then stays twice as long, and then rotates clockwise for forty-five degrees, and finally, the moving contact 8 touches the opening static contact 3 under the driving of the gear A6 through the conducting rod 13.

When the moving contact 8 and the closing stationary contact 2 need to be touched to bring the disconnecting switch into a grounded state, the gear B7 is rotated by ninety degrees clockwise by the driving motor 10 based on the above operation.

If the disconnecting switch needs to be switched from the grounding state to the closing state, the driving motor 10 is controlled to enable the gear B7 to rotate by one hundred and eighty degrees in the counterclockwise direction, and the other state switching can be performed in the same way.

The utility model discloses a driving motor 10 drive slewing mechanism to make movable contact 8 contact the static contact that corresponds according to operating command. The rotating mechanism adopts a mode that a gear A6 and a gear B7 are rotationally clamped, particularly, the outer end of the gear A6 is provided with an equally spaced gear groove A601, every eighth of the interval of the outer end of the gear B7 is provided with an equally spaced gear groove B701, and the rest part is a smooth insulating surface 702; the gear A6 can be ensured to be conductive only when contacting the gear groove B702, the power utilization safety in the process of operating the switch is ensured, and the arc discharge phenomenon is reduced.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (6)

1. The utility model provides a three station isolator of GIS which characterized in that: the switching device comprises a switch shell, a closing static contact, an opening static contact, a grounding static contact, a moving contact, a connecting column, an insulating base, a rotating mechanism and a driving motor;

set up two pairs of mutually perpendicular interfaces on the switch casing, include: the left interface and the right interface are positioned at a horizontal position, and the upper interface and the lower interface are positioned at a vertical position; the switching-on static contact is positioned at the left interface, the grounding static contact is positioned at the right interface, the switching-off static contact is positioned at the upper interface, and the connecting column is fixedly arranged at the lower interface; the insulating base is arranged at the bottom of the switch shell, and the driving motor is arranged on the insulating base;

the rotating mechanism is arranged in the switch shell and comprises a gear A, a gear B, an L-shaped insulating support rod, an insulating rotating rod and a conducting rod; the gear B and the gear A are both longitudinally arranged, and the gear A is positioned right above the gear B; the right side of the axle center of the gear A is connected with the L-shaped insulating support rod, and the other end of the L-shaped insulating support rod is fixed on the insulating base; the conductive rod is arranged on the left side of the axis of the gear A, and the moving contact is fixed on the surface of the gear A through the conductive rod;

the gear A and the gear B are rotationally clamped, the outer end of the gear A is provided with equally spaced gear grooves A, each eighth of the outer end of the gear B is provided with equally spaced gear grooves B, and the rest parts are smooth insulating surfaces; the gear groove A and the gear groove B are adaptive in size and distance, and the circumference of the gear groove B is equal to one quarter of the circumference of the gear groove A; when the moving contact is contacted with the opening static contact, the lowest end of the gear groove A is meshed with the midpoint of the gear groove B;

gear B axle center left end with the spliced pole is connected, gear B axle center right-hand member with insulating dwang is connected, gear B passes through insulating dwang with driving motor's output pivot is connected, gear B's axle center with the axle center of insulating dwang the axle center of output pivot is on same straight line.

2. The GIS three-position disconnector of claim 1, wherein: the connecting column, the conductive rod, the gear A and the gear B are all made of beryllium copper alloy.

3. The GIS three-position disconnector of claim 1, wherein: the contact end of the moving contact is of an arc-shaped structure.

4. The GIS three-position disconnector according to claim 1, characterized in that: eight holes with the same size are arranged on the gear B at equal intervals.

5. The GIS three-position disconnector of claim 1, wherein: and the switching-on static contact, the switching-off static contact, the grounding static contact and the movable contact are all provided with copper-tungsten alloy sheets.

6. The GIS three-position disconnector of claim 1, wherein: the switch shell is provided with a zinc coating on the surface.

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